Track-brake.



w. W, ALBEN. TRAGKBRAKB, vAPPLIUATIOH FILED DEO. 6', 1908, l 924,720. Patented June 15,1909.,

www u nin* Il m lmaen han W. W. ALLEN. TRACK BRAKE.

I PPLXA-TION FILED DEC. 5, 1908. I 924,720. Patented J'u11e15,1i-)09.V

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. shoes, whereby e when the brakes are applied independent of.

UNITED PATENT OFFI To all 'whom it may concern: i

Be it known that I, WILLIAM W. ALLEN, a citizen of the United States, residing at Du-` luth, in the county of St. Louis and State' of Minnesota, have invented certain new and useful I which the following is a specification.

This invention relates to improvements in track brakes, but more especially that class of track brakes which are jointed and flexible in their connections, and which yield under excessive pressure without injury to the pivotal connections thereon.

This invention further relates to the independent pivotal connections of the brake an elastic movement ensues the pivotal connections on the truck beam, by this means an even pressure is maintained throughout the entire length of the shoes.

A further object of the invention is to makethe brake shoes of sufficient length so that they will be eective a frog or switch rails, as it frequently happens that the brakes are applied close to a city where the switches are'nuinerous, and short brake shoes would be c liable to be caught in the frogs or switch rails thereof.

The majority of track brakes are rigid, in

their connections and any slight obstruc tions, suoli as the depression of the end ofa rail at the ilsh plates, or on a switch would injure the mechanism thereon, and conse-r quently the brakes would be useless. j,

With my improved track brake the flexible connections will yield in opposite directions sufiiciently so as to prevent any injury to. the parts assembled thereon, and at the g truck mechanism same time be not liable to injure the car by excessive brake pressure, as the levers form semi-toggle joints and become vertical with the track when in braking operation, and any excessive pressure will throw the'seini-toggles at an angle thereto, thus easing up the brake mechanism which will prevent accidents. The construcf tion of the brake mechanismis suoli, that it becomes automatic in one direction when the brake shoes contact the rails.

With the foregoing and other ,objects in e view, theinvention consists in the details of,4 construction and in the arrangement and" combination of parts to ,be hereinafter more fully set forth andclaimed.

In describing the invention in detail, refer- Specication of Letters Patent. Application filed December 5, 19GB,`

mprovements in vTrack-Brakes, of

when passing over patented .rune 15', 1909' serial No. 466,151.

ings forming part of this in the several views, in which,' I Figure 1 represents a truck in front eleva tion with my improved track brake thereon. Fig. 2 represents a sideelevation oiga truck l with the track brake thereon, part of is indicated in section." Fig. 3 representsa' plan view of a truck with the brakeand the operating mechanism thereon, with parts fbrokenaway. Fig.V 4 represents the bri'ik'efA shoe in side elevation and partly inv section speci cation,wher e,` in like characters denote. corresponding parts 2 exhibiting the Wearing block. Fig. 5 rep- 70 resents the jointed link in side elevation for supporting the brake shoe. Fig. 6` repre: sents'the jointed link in anedge View. Fig.

represents the roller lever for operating the" fi brake shoe in side elevation, partly broken away. Figs. 8 and 9, represent respeta-iwf tively, front elevation and section ,of .the brake shoe and the jointed link thereon, -f

This im .roved track brake A, consistsofai .l oe B, which is connectedvto a; 1Q

pivoted s 1 v* jointed link C, by a pin b. One end `ol' said shoe B, is rounded at B', in the form of a@ seinicircle or hook for allowing apivoted "5 lever D, to operate ai roller E, which 82,5,

mounted on a pine, secured to said leverf Lever D, is provided with a projectingclfj D', attached thereto, which is provided with., n

a pin d, for securing it to the operating-level, 1

. The lever D, and the pivoted link mounted on short shafts, F and F', respec-'gy tivelT en avin ears' formin(i )art of thej g rs g n plate-Gr. l j concave so as to receive yokes H, H, for- `securing' said plate G to the truck bcamP-,f

through the medium ofithe platen, mounted' 9,5,

on said truck beam.

The operating lever-II, previously referred f crumed to a bifurcated platefK,f

to is fu which isbolted tothe edge of the truck beam ,i

A pin i, supports said opel-'ating lever l, i centrally of said lever, the free end oi' which is attached to a brake rod J,.for operating the track brake A, when necessary.

The mechanism for operatingthe; brakes` I .i Y

can be of any` desired construction,v such as steam, air or purely mechanical means.` 1 The truck beam P, 'issecured to a diamond frame, which is rovidedwith boxes T, for supporting wheels S, on the track L.

ie brake shoe B, is provided `with' a 11 flange B4, to prevent the brake shoe from l disengagement from the track L, and also The extreme ends of plate G, are- .y

ico 'j y:from spreading laterally through the medium ofv the rodlor shaft d, which operates the levers simultaneously when braking.

.The 'jointed links' C are' provided with 5 shoulders C,for engagement with the shoulders B52-on the brake shoe B. These shoul-A the..brakeshoe B,from contact with'the rail f L, the roller E, entersthe inside portion R, of the hook B and` raises or releases it-from the track L, and Iit is supported inthis positlon until necessary to operate the brake again. Thel bottom of thev brake shoe B, is provided wlth a Wearing block which is dove,

' tailed in said brake'shoe and secured in the ordinary manner witha key. 'l y y The jointed links C, fare provided with bosses C,`to give greater stability and stiffness when operating the brake shoes, and

also to prevent flateral movement of the vers D, are also roviddd with heavy bosses D, yso as to ho d saidlevers in alinement with the brake shoes B;

the brake shoes are convex, and the rollers contacting said brake shoes are concave on theirV periphery, conse uently the two surfaces contacting Will ho d the brake shoes in alinement with the railway track andv also 4with the car wheels thereon, and `thus prevent lateral movement of the brake shoes and their connecting mechanism.

I donot limit myself to the exact construction asherein shown and described, as

combination with my pivotal shoe, and come the sco e of the present invention. That which l desire to claimand secure by' 30 A track brake shoe provided with pivotal connections thereon, in combination with hooked portions for releasing said track brake, as shown and described.

2. A track brake provided with pivotal levers, brake shoes attached to said pivotal levers, a hooked portion on said brake shoes, means for releasing said brake shoes from a railway track for the purpose in view.

3. A track-brake provided with pivotal levers, brake shoes plvoted to said pivoted levers, a hooked portion on said brake shoes andthe means for releasing said brake shoes through the medium of said hooked portion as specified.

.shoe and gradially force the shoe against the rail L, in 'combination with thelever or' ]o 1nted hnk C. When-necessary to release `parts connected therewith. The roller le-v It will be observed that the top portion oi?v other pivotal devices can be employed in levers, brake shoes pivoted to said pivoted levers, a hooked portion on said brake shoes a roller lever for'releasing said track brake as specified. j

5. A brake mechanism provided with levers attached to a car truck, brake shoes pivotally4 attached to said levers, a hooked portion on said` brake `shoes and means for operating said brake shoes as specified.

6. A track brake ,provided Wlth levers attached .to 'a truck beam, brake shoes ivotally connected to levers onsaid truck eam, means for releasing said brake shoes through `the medium of a hooked portionV on said 'brake' shoes asspecified.

- 7. A track brake providedwith levers attached to a plate, said plate attached to a vtruck beam, brake shoes pivotally connectedl tosaid levers, a'hooked portion on said brake .shoes and means for operating said brake shoes as herein shown and described.

tached to a plate, brake shoes pivotally connected to said levers, rolle'rlevers for operating said brakeshoes ass ecified.

' 9. A track brake attache to a truck beam, levers pivoted to said truck beam, brake shoes connected to said levers and in alinement 'with a railway track, a hooked ortion on said brake shoes, and the meansy or el vating and ,lowering said brake shoes for the purpose' as specified.

10.v A track brake attached to a` truck beam through the medium of levershpivotally connected therewith, brake shoes provided 'With fianges thereon pivotally connected to said levers of a roller lever for operating said brake shoes as specified.

11. A track brake consisting of levers piv-` otally securedto a truck, ofbrake shoes ivotally secured to said levers, a hooker or turned up portionon said brake shoes for engaging roller .levers for the purpose `as specified l 12. A track brake provided rwith levers pivotally attached'to a late, said plate secured toa truck beam, rake shoes pivoted to'said levers, a roller lever rovided with 8. A track brake provided with levers at-v ears thereon for elevating an lowering said brake shoes for the purpose as shown and4 described.

13'.. A track brak rovided with levers or jointed links, brake s oes pivoted to said levers or 'ointed links, roller levers engaging said bra e shoes at the hooked portion there- 4. A track brake provided with pivoted lin'ks, a hooked. portion on said shoes,

up portion on said brake shoes as specified.

15. A track brake provided with lointed links, brake shoes ivoted to said Joptel s ou the truck beam of a lever pivotedto said truck beam engaging ders on said brake shoes and jointed links,

levers attached thereto, said levers also at-- tached to a tr'uck beam, brake-sloes provided with hooked portions, roller levers 'for engaging said hooked portions, an operating lever connected to said roller lever for-the purpose as specified.

17. A track brake having jointed links or levers pivoted to a truck beam' through the medium of a plate thereon, brake shoes ivoted to said jointed links or levers, ahoo ed portion on said brake shoes for receiving rollers ,therein pivoted to levers secured to car truc'k, an operating said roller levers.

18. A track brakerovided with brake shoes having langes tiereon and ,a turned up or hooked portion, roller levers for engagling said hooked portionA and operating said brake shoes, pivotallevers attached to a cal truck engaging said brake shoes/ and an operating lever attached to a shaft 'connecting with said roller levers for the "purpose as specied.

19. A track brake attached to the truck beam of= a oar truck, through theA medium of levers, brake shoes connected to saidl1 levers, shoulders on said levers andA brake shoes, a hooked portion on said brake shoes for engaging roller levers attached to said truck beam, a shaft connectilig'said roller levers and an operating leveron said shaft for the purpose as specified. A

In testimony whereof I aHiX my signature in presence of two witnesses. i

' WILLIAM W. ALLEN. lNitnesses S.'VAN WAGNER., 

